// Copyright Aug 4, 2006 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package jBlocks.server.tapestry;

/**
 * Handles escaping of special characters as per the XML spec section 2.2.
 * 
 * @author lquijano
 */
public final class XmlCharacterTranslator extends MarkupCharacterTranslator
{

    /** Default constructor. */
    public XmlCharacterTranslator()
    {
        super(true);
    }

    /**
     * Translates the character.
     * 
     * <p>
     * XML spec section 2.2 Char ::= #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF] any Unicode
     * character, excluding the surrogate blocks, FFFE, and FFFF.
     * </p>
     */
    public String translate(char ch)
    {
        if (ch == 0x09 || ch == 0x0a || ch == 0x0d || (ch >= 0x20 && ch <= 0xd7ff) || (ch >= 0xe000 && ch <= 0xfffd)
            || (ch >= 0x10000 && ch <= 0x10ffff))
        {
            return super.translate(ch);
        }

        return "";
    }
}
